Mirror my phones broken screen to my laptop via usb cable.

[Rynoxl]

My phone has a broken screen and I need to see whats on it so I can save anything important?

[rom1v]

Is USB debugging enabled?

[ccsol01]

@rom1v , I need help! Here's the scenario:

1 - My girlfriend broke my screen (Honor Magic 2, running HarmonyOS 4);
2 - I turned my device off (stupid me, want to kill myself!);
3 - I have a pattern to unlock boot, so now I'm stucked;
4 - ADB don't recognize device, but fastboot does (in recovery mode?);
5 - ADB over WiFi was enabled but can't connect to device. Connection refused;
6 - Tryied an usb hub with HDMI but no success;
7 - Tryied some solutions that I've found around here, but got a little bit confused with all the information;
8 - Running scrcpy v2.1 on Windows 10 Pro with no privileges.
9 - Haven't tryied Linux yet.

Pardon my English ;D

[rom1v]

ADB don't recognize device

So you need to enable USB debugging, which is difficult without seeing the screen.

If you have another identical device, you could try to record the actions needed to enable USB debugging (#4556) and replay them on your device. But this won't be simple for the pattern to unlock boot (I'm not even sure OTG mode works during boot).

Talkback might also help apparently (#4718).

[ccsol01]

Right. But if remember USB debugging was enabled. Well, thanks for now.

[rom1v]

If you get nothing in adb devices, then it is not enabled (or the device is not detected).
If you get device unauthorized, then it is enabled, and it can be authorized: https://www.reddit.com/r/AndroidQuestions/comments/15ypn04/comment/jxdtsql/

[ccsol01]

It is detected by fastboot. Saw something about Windows drivers...I'll try on Linux, when I have the opportunity. Thanks @rom1v